/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:57:30,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:57:30,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:57:30,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:57:30,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:57:30,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:57:30,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:57:30,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:57:30,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:57:30,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:57:30,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:57:30,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:57:30,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:57:30,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:57:30,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:57:30,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:57:30,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:57:30,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:57:30,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:57:30,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:57:30,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:57:30,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:57:30,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:57:30,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:57:30,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:57:30,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:57:30,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:57:30,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:57:30,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:57:30,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:57:30,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:57:30,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:57:30,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:57:30,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:57:30,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:57:30,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:57:30,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:57:30,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:57:30,103 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:57:30,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:57:30,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:57:30,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:57:30,129 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:57:30,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:57:30,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:57:30,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:57:30,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:57:30,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:57:30,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:57:30,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:57:30,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:57:30,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:57:30,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:57:30,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:57:30,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:57:30,133 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:57:30,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:57:30,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:57:30,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:57:30,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:57:30,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:57:30,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:57:30,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:57:30,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:57:30,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:57:30,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:57:30,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:57:30,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:57:30,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:57:30,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:57:30,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:57:30,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:57:30,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:57:30,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:57:30,464 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:57:30,466 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:57:30,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:57:30,467 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:57:30,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd42ee5b/40f9f4628c1f4d4b817acb4b98aba561/FLAG167f46f91 [2020-10-12 19:57:31,225 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:57:31,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:57:31,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd42ee5b/40f9f4628c1f4d4b817acb4b98aba561/FLAG167f46f91 [2020-10-12 19:57:31,460 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd42ee5b/40f9f4628c1f4d4b817acb4b98aba561 [2020-10-12 19:57:31,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:57:31,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:57:31,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:57:31,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:57:31,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:57:31,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:57:31" (1/1) ... [2020-10-12 19:57:31,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a0aa91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:31, skipping insertion in model container [2020-10-12 19:57:31,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:57:31" (1/1) ... [2020-10-12 19:57:31,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:57:31,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:57:32,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:57:32,691 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:57:33,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:57:33,048 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:57:33,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33 WrapperNode [2020-10-12 19:57:33,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:57:33,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:57:33,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:57:33,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:57:33,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... [2020-10-12 19:57:33,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:57:33,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:57:33,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:57:33,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:57:33,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:57:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:57:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:57:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:57:33,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:57:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:57:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:57:33,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:57:33,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:57:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:57:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:57:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:57:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:57:33,379 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:57:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:57:33,380 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:57:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:57:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:57:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:57:33,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:57:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:57:33,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:57:36,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:57:36,386 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:57:36,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:57:36 BoogieIcfgContainer [2020-10-12 19:57:36,401 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:57:36,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:57:36,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:57:36,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:57:36,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:57:31" (1/3) ... [2020-10-12 19:57:36,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7912ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:57:36, skipping insertion in model container [2020-10-12 19:57:36,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:57:33" (2/3) ... [2020-10-12 19:57:36,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7912ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:57:36, skipping insertion in model container [2020-10-12 19:57:36,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:57:36" (3/3) ... [2020-10-12 19:57:36,414 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2020-10-12 19:57:36,424 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:57:36,437 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-10-12 19:57:36,453 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-12 19:57:36,487 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:57:36,488 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:57:36,488 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:57:36,488 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:57:36,488 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:57:36,488 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:57:36,488 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:57:36,489 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:57:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states. [2020-10-12 19:57:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:57:36,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:36,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:57:36,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1150486229, now seen corresponding path program 1 times [2020-10-12 19:57:36,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:36,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178609504] [2020-10-12 19:57:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:37,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:37,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:37,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:38,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:41,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:57:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:57:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 19:57:41,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:57:41,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:57:41,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:57:41,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 19:57:43,065 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:57:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:57:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:43,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:43,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:57:43,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:57:43,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:57:43,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 19:57:43,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:57:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:57:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:57:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:57:43,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:57:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:57:43,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178609504] [2020-10-12 19:57:43,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:57:43,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:57:43,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974610291] [2020-10-12 19:57:43,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:57:43,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:57:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:57:43,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:57:43,187 INFO L87 Difference]: Start difference. First operand 1259 states. Second operand 11 states. [2020-10-12 19:57:43,798 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2020-10-12 19:57:58,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:57:58,942 INFO L93 Difference]: Finished difference Result 4334 states and 7381 transitions. [2020-10-12 19:57:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:57:58,946 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 55 [2020-10-12 19:57:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:57:59,008 INFO L225 Difference]: With dead ends: 4334 [2020-10-12 19:57:59,009 INFO L226 Difference]: Without dead ends: 3170 [2020-10-12 19:57:59,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2020-10-12 19:57:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2020-10-12 19:57:59,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2656. [2020-10-12 19:57:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2020-10-12 19:57:59,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3603 transitions. [2020-10-12 19:57:59,262 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3603 transitions. Word has length 55 [2020-10-12 19:57:59,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:57:59,263 INFO L479 AbstractCegarLoop]: Abstraction has 2656 states and 3603 transitions. [2020-10-12 19:57:59,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:57:59,263 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3603 transitions. [2020-10-12 19:57:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:57:59,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:57:59,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:57:59,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:57:59,271 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:57:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:57:59,272 INFO L82 PathProgramCache]: Analyzing trace with hash 705370957, now seen corresponding path program 1 times [2020-10-12 19:57:59,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:57:59,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663681966] [2020-10-12 19:57:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:57:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:57:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:57:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:00,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:04,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:58:04,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:58:04,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-12 19:58:04,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:58:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:58:04,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:58:04,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:05,187 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:05,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:05,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:05,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:05,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 19:58:05,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:05,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:58:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:05,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:58:05,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:58:05,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:05,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663681966] [2020-10-12 19:58:05,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:05,281 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:58:05,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662308715] [2020-10-12 19:58:05,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:58:05,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:05,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:58:05,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:58:05,286 INFO L87 Difference]: Start difference. First operand 2656 states and 3603 transitions. Second operand 12 states. [2020-10-12 19:58:06,015 WARN L193 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 327 [2020-10-12 19:58:25,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:25,069 INFO L93 Difference]: Finished difference Result 17485 states and 26309 transitions. [2020-10-12 19:58:25,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:58:25,070 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2020-10-12 19:58:25,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:25,156 INFO L225 Difference]: With dead ends: 17485 [2020-10-12 19:58:25,156 INFO L226 Difference]: Without dead ends: 17032 [2020-10-12 19:58:25,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=405, Invalid=1235, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 19:58:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2020-10-12 19:58:25,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 2670. [2020-10-12 19:58:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2670 states. [2020-10-12 19:58:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 3621 transitions. [2020-10-12 19:58:25,476 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 3621 transitions. Word has length 56 [2020-10-12 19:58:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:25,476 INFO L479 AbstractCegarLoop]: Abstraction has 2670 states and 3621 transitions. [2020-10-12 19:58:25,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:58:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 3621 transitions. [2020-10-12 19:58:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 19:58:25,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:25,484 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:25,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:58:25,485 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:25,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:25,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1294211967, now seen corresponding path program 1 times [2020-10-12 19:58:25,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:25,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1517948640] [2020-10-12 19:58:25,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:25,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:25,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:26,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:27,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:28,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:28,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:28,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 19:58:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:58:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 19:58:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:58:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:58:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:31,487 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:31,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:31,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:31,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:31,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:31,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 19:58:31,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:31,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:31,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:31,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:31,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1517948640] [2020-10-12 19:58:31,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:31,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:58:31,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035429963] [2020-10-12 19:58:31,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:58:31,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:31,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:58:31,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:58:31,580 INFO L87 Difference]: Start difference. First operand 2670 states and 3621 transitions. Second operand 15 states. [2020-10-12 19:58:32,886 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 336 DAG size of output: 331 [2020-10-12 19:58:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:58:46,504 INFO L93 Difference]: Finished difference Result 6477 states and 9353 transitions. [2020-10-12 19:58:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:58:46,506 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-10-12 19:58:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:58:46,527 INFO L225 Difference]: With dead ends: 6477 [2020-10-12 19:58:46,527 INFO L226 Difference]: Without dead ends: 5139 [2020-10-12 19:58:46,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2020-10-12 19:58:46,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2020-10-12 19:58:46,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 3066. [2020-10-12 19:58:46,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3066 states. [2020-10-12 19:58:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4263 transitions. [2020-10-12 19:58:46,839 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4263 transitions. Word has length 56 [2020-10-12 19:58:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:58:46,845 INFO L479 AbstractCegarLoop]: Abstraction has 3066 states and 4263 transitions. [2020-10-12 19:58:46,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:58:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4263 transitions. [2020-10-12 19:58:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:58:46,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:58:46,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:58:46,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:58:46,852 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:58:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:58:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash 215676365, now seen corresponding path program 1 times [2020-10-12 19:58:46,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:58:46,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574843107] [2020-10-12 19:58:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:58:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:47,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:47,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:47,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:49,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:50,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:51,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:51,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:51,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:51,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:58:51,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:58:51,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:58:51,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:58:51,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:58:51,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:58:52,788 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:58:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:58:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:58:52,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:58:52,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:58:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:58:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:58:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 19:58:52,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:58:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:58:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:58:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:58:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:58:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:58:52,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574843107] [2020-10-12 19:58:52,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:58:52,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:58:52,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472410549] [2020-10-12 19:58:52,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:58:52,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:58:52,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:58:52,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:58:52,876 INFO L87 Difference]: Start difference. First operand 3066 states and 4263 transitions. Second operand 17 states. [2020-10-12 19:58:53,020 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-12 19:58:56,501 WARN L193 SmtUtils]: Spent 3.41 s on a formula simplification. DAG size of input: 358 DAG size of output: 356 [2020-10-12 19:58:57,392 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 19:59:05,712 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-12 19:59:07,004 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-12 19:59:07,362 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2020-10-12 19:59:07,631 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-12 19:59:08,549 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-12 19:59:10,645 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-12 19:59:12,022 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-12 19:59:13,533 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 19:59:13,765 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2020-10-12 19:59:14,523 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-12 19:59:14,723 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2020-10-12 19:59:15,988 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-12 19:59:16,135 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:59:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:16,788 INFO L93 Difference]: Finished difference Result 13759 states and 20801 transitions. [2020-10-12 19:59:16,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 19:59:16,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-12 19:59:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:16,820 INFO L225 Difference]: With dead ends: 13759 [2020-10-12 19:59:16,820 INFO L226 Difference]: Without dead ends: 12054 [2020-10-12 19:59:16,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=688, Invalid=2852, Unknown=0, NotChecked=0, Total=3540 [2020-10-12 19:59:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12054 states. [2020-10-12 19:59:17,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12054 to 6199. [2020-10-12 19:59:17,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6199 states. [2020-10-12 19:59:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 9255 transitions. [2020-10-12 19:59:17,649 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 9255 transitions. Word has length 57 [2020-10-12 19:59:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:17,649 INFO L479 AbstractCegarLoop]: Abstraction has 6199 states and 9255 transitions. [2020-10-12 19:59:17,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:59:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 9255 transitions. [2020-10-12 19:59:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:59:17,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:17,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:17,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:59:17,654 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:17,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:17,654 INFO L82 PathProgramCache]: Analyzing trace with hash -717922590, now seen corresponding path program 1 times [2020-10-12 19:59:17,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:17,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794850126] [2020-10-12 19:59:17,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:17,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:17,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:18,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:18,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:18,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:19,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:20,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:59:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:59:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:59:22,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:59:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:59:22,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:59:22,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:59:23,879 WARN L193 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:59:23,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:23,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:23,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:23,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:23,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 19:59:23,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:59:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:23,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:59:23,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:59:24,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:24,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794850126] [2020-10-12 19:59:24,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:24,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:59:24,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7853812] [2020-10-12 19:59:24,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:59:24,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:24,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:59:24,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:59:24,005 INFO L87 Difference]: Start difference. First operand 6199 states and 9255 transitions. Second operand 17 states. [2020-10-12 19:59:24,237 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-12 19:59:25,664 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 357 DAG size of output: 355 [2020-10-12 19:59:26,128 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-10-12 19:59:36,979 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-10-12 19:59:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:59:41,114 INFO L93 Difference]: Finished difference Result 15003 states and 22646 transitions. [2020-10-12 19:59:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:59:41,115 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-10-12 19:59:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:59:41,148 INFO L225 Difference]: With dead ends: 15003 [2020-10-12 19:59:41,148 INFO L226 Difference]: Without dead ends: 14998 [2020-10-12 19:59:41,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=489, Invalid=1863, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 19:59:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14998 states. [2020-10-12 19:59:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14998 to 6199. [2020-10-12 19:59:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6199 states. [2020-10-12 19:59:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6199 states to 6199 states and 9254 transitions. [2020-10-12 19:59:41,968 INFO L78 Accepts]: Start accepts. Automaton has 6199 states and 9254 transitions. Word has length 57 [2020-10-12 19:59:41,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:59:41,968 INFO L479 AbstractCegarLoop]: Abstraction has 6199 states and 9254 transitions. [2020-10-12 19:59:41,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:59:41,969 INFO L276 IsEmpty]: Start isEmpty. Operand 6199 states and 9254 transitions. [2020-10-12 19:59:41,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-12 19:59:41,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:59:41,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:59:41,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:59:41,972 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:59:41,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:59:41,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1175559912, now seen corresponding path program 1 times [2020-10-12 19:59:41,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:59:41,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400426484] [2020-10-12 19:59:41,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:59:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:43,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:47,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:47,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:59:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:59:47,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:47,385 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-12 19:59:48,439 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 19:59:48,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:59:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:59:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:59:48,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:59:48,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:59:48,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:59:48,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:59:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:59:48,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400426484] [2020-10-12 19:59:48,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:59:48,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:59:48,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897076347] [2020-10-12 19:59:48,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:59:48,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:59:48,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:59:48,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:59:48,509 INFO L87 Difference]: Start difference. First operand 6199 states and 9254 transitions. Second operand 15 states. [2020-10-12 19:59:48,713 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-12 19:59:50,172 WARN L193 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 363 DAG size of output: 356 [2020-10-12 19:59:50,512 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-12 19:59:50,956 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-12 20:00:04,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:04,928 INFO L93 Difference]: Finished difference Result 29066 states and 45059 transitions. [2020-10-12 20:00:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 20:00:04,929 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-10-12 20:00:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:04,964 INFO L225 Difference]: With dead ends: 29066 [2020-10-12 20:00:04,964 INFO L226 Difference]: Without dead ends: 23979 [2020-10-12 20:00:04,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 20:00:05,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23979 states. [2020-10-12 20:00:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23979 to 12390. [2020-10-12 20:00:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12390 states. [2020-10-12 20:00:06,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12390 states to 12390 states and 19107 transitions. [2020-10-12 20:00:06,795 INFO L78 Accepts]: Start accepts. Automaton has 12390 states and 19107 transitions. Word has length 57 [2020-10-12 20:00:06,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:06,796 INFO L479 AbstractCegarLoop]: Abstraction has 12390 states and 19107 transitions. [2020-10-12 20:00:06,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 20:00:06,796 INFO L276 IsEmpty]: Start isEmpty. Operand 12390 states and 19107 transitions. [2020-10-12 20:00:06,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 20:00:06,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:06,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:00:06,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 20:00:06,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:06,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:06,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2108629905, now seen corresponding path program 1 times [2020-10-12 20:00:06,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:06,801 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9477588] [2020-10-12 20:00:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:06,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:07,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:07,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2720 [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:09,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 20:00:09,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:00:09,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:00:09,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:10,426 WARN L193 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 310 [2020-10-12 20:00:10,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 20:00:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:10,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:10,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 20:00:10,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 20:00:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 20:00:10,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 20:00:10,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9477588] [2020-10-12 20:00:10,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 20:00:10,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 20:00:10,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650034023] [2020-10-12 20:00:10,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 20:00:10,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 20:00:10,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 20:00:10,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-12 20:00:10,466 INFO L87 Difference]: Start difference. First operand 12390 states and 19107 transitions. Second operand 13 states. [2020-10-12 20:00:11,108 WARN L193 SmtUtils]: Spent 562.00 ms on a formula simplification that was a NOOP. DAG size: 321 [2020-10-12 20:00:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 20:00:23,364 INFO L93 Difference]: Finished difference Result 33575 states and 52279 transitions. [2020-10-12 20:00:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 20:00:23,365 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-12 20:00:23,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 20:00:23,399 INFO L225 Difference]: With dead ends: 33575 [2020-10-12 20:00:23,400 INFO L226 Difference]: Without dead ends: 33571 [2020-10-12 20:00:23,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2020-10-12 20:00:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33571 states. [2020-10-12 20:00:25,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33571 to 12375. [2020-10-12 20:00:25,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12375 states. [2020-10-12 20:00:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12375 states to 12375 states and 19084 transitions. [2020-10-12 20:00:25,086 INFO L78 Accepts]: Start accepts. Automaton has 12375 states and 19084 transitions. Word has length 58 [2020-10-12 20:00:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 20:00:25,086 INFO L479 AbstractCegarLoop]: Abstraction has 12375 states and 19084 transitions. [2020-10-12 20:00:25,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 20:00:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 12375 states and 19084 transitions. [2020-10-12 20:00:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-12 20:00:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 20:00:25,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 20:00:25,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 20:00:25,089 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 20:00:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 20:00:25,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1198215639, now seen corresponding path program 1 times [2020-10-12 20:00:25,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 20:00:25,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000458608] [2020-10-12 20:00:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 20:00:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 20:00:25,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 20:00:26,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1762 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 20:00:26,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0